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Investment Securities - Schedule of Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Amortized cost
Due in one year or less	$ 102,067
Due after one year through five years	86,247
Due after five years through ten years	117,226
Due after ten years	53,824
Mortgage and asset-backed securities	2,043,309
Amortized cost	2,402,673	$ 2,400,781
Fair value
Due in one year or less	102,037
Due after one year through five years	80,042
Due after five years through ten years	99,530
Due after ten years	41,642
Mortgage and asset-backed securities	1,781,033
Fair value	$ 2,104,284	$ 2,032,802

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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